While it may seem that all mosquitoes are biter, this is not actually the case. Male mosquitoes eat plant nectar on the other hand,female mosquitoes feed on animal blood they need is blood to live and produce eggs. When a female mosquito bites a human bring,it transmits a small amount of saliva into the blood. This saliva may or may not contain a deadly disease. The result of the bite can be as an itchy bump or as serious as death.